Velosaotsy, N.; Genin, E.; Nongonierma, R.; Al-Lihaibi, S.; Kornprobst, J.-M.; Vacelet, J.; Barnathan, G. (2004). Phospholipid distribution and phospholipid fatty acids in four Saudi Red Sea sponges. In: Pansini M, Pronzato R, Bavestrello G, Manconi R, Sarà M (eds) Sponge Science in the New Millenium. Bollettino dei Musei e degli Istituti Biologici dell'Universitá di Genova. 68, 639-645.

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Velosaotsy, N.; Genin, E.; Nongonierma, R.; Al-Lihaibi, S.; Kornprobst, J.-M.; Vacelet, J.; Barnathan, G.

2004

68, 639-645

Publication

Proceedings of the 6th International Sponge Conference, Rapallo (Italy) 29 September – 5 October 2002

Available for editors   [request]

Sponge phospholipids and phospholipid fatty acids were investigated in sponges collected in Saudi Red Sea, namely Cinachyrella sp1, Cinachyrella sp2, Chalinula saudiensis and Stylissa carteri. More than fifty fatty acids have been identified as methyl esters and N-acyl pyrrolidides in each fatty acid mixture by GC/MS. The presence of bacteria was evidenced from the relatively high proportions of phosphatidylglycerol and phosphatidylinositol, and the high levels of the branched short-chain fatty acids. Cinachyrella sponges contained eighteen typical delta5,9 fatty acids, and new compounds, namely 17-methyltetracosanoic, 18-methyl tetracosanoic, 18-methylpentacosanoic, 18-methylhexacosanoic, 18,24-dimethylheptacosanoic and 6-bromo-delta5,9-nonacosadienoic acids. Phospholipid fatty acids from Stylissa carteri were characterised by a high content of delta5,9 fatty acids (55.5 %) and phytanic acid (20 %). Chalinula saudiensis contained several delta5,9 fatty acids, including the rare 6-bromo-delta5,9- octacosadienoic acid. Unexpected polyunsaturated fatty acids occurred in the two latter sponges, such as arachidonic and docosahexaenoic acids.

Red Sea

Biochemistry

Porifera

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